If you're looking for something similar to Lex, Reword could be a good option. It has an AI-powered editor with tools like Cowriter for collaboration, Voices for keeping a writing style, and Topic Ideas for content generation. It supports more than 25 languages and can be integrated with content management systems. Reword also has a desktop app for a more immersive writing experience and supports more than 25 languages, so it can be used in many different situations.
Another option is HyperWrite, an AI writing assistant designed to increase productivity and writing quality. It has tools like Flexible AutoWrite, Summarizer and Rewrite Content that are designed to accommodate different types of writers. HyperWrite also offers real-time research assistance and can be easily integrated into existing processes, so it's a good option for those looking to improve writing quality and research abilities.
You could also look at Wordtune, which is designed to increase productivity, confidence and overall writing quality. It has features like Rewrite for error-free writing, an AI Writing Assistant for personalized writing prompts and a Summarizer for shortening long documents. Wordtune integrates with Google Calendar and Microsoft Word, and is available on the web, mobile and desktop, so it's a good option for improving writing efficiency.
If you're looking for something a bit more basic and free, Rytr offers a variety of tools including AI autocomplete, text editing and SEO optimization tools. It can be accessed through a Chrome Extension and API, so it can be easily integrated with different processes. Rytr's free tier covers more than 40 use cases, so it's a good option for improving writing productivity without a big budget.